Search for single b*-quark production with the ATLAS detector at root s=7 TeV


Aad G., Abajyan T., Abbott B., Abdallah J., Khalek S. A., Abdelalim A. A., ...Daha Fazla

PHYSICS LETTERS B, cilt.721, ss.171-189, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 721
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1016/j.physletb.2013.03.016
  • Dergi Adı: PHYSICS LETTERS B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.171-189
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

The results of a search for an excited bottom-quark b* in pp collisions at root s = 7 TeV, using 4.7 fb(-1) of data collected by the ATLAS detector at the LHC are presented. In the model studied, a single b*-quark is produced through a chromomagnetic interaction and subsequently decays to a W boson and a top quark. The search is performed in the dilepton and lepton + jets final states, which are combined to set limits on b*-quark couplings for a range of b*-quark masses. For a benchmark with unit size chromomagnetic and Standard Model-like electroweak b* couplings, b* quarks with masses less than 870 GeV are excluded at the 95% credibility level. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.